An old blind man was sitting on a busy street begging for money. On a cardboard sign, next to an empty tin cup, he had written "Blind – Please help".
No one was giving him any money.
A copywriter from an advertising agency walked past, and she saw the blind man with his sign and empty cup.
The copywriter took a marker from her pocket, turned the cardboard back-to-front, and re-wrote the sign, then went on her way.
Immediately, people began putting money into the tin cup.
After a while, when the cup was overflowing, the blind man asked a stranger to tell him what the sign now said.
“It says:
It’s a beautiful day. You can see it. I cannot.” said the stranger.